JP4727492B2 - Precast concrete beam members - Google Patents

Precast concrete beam members Download PDF

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JP4727492B2
JP4727492B2 JP2006115056A JP2006115056A JP4727492B2 JP 4727492 B2 JP4727492 B2 JP 4727492B2 JP 2006115056 A JP2006115056 A JP 2006115056A JP 2006115056 A JP2006115056 A JP 2006115056A JP 4727492 B2 JP4727492 B2 JP 4727492B2
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precast
bar
main bar
column
precast concrete
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JP2007285040A (en
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琢雄 小竹
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Okumura Corp
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Description

本発明は、鉄筋が錯綜する柱梁接合部での配筋作業を軽減するのに適した形態を備え、柱梁接合部周りの梁主筋の配筋を効率よく実施することが可能で、施工効率を向上できるプレキャストコンクリート製梁部材に関する。   The present invention has a form suitable for reducing the work of bar arrangement at the beam-column joint where the reinforcing bars are complicated, and it is possible to efficiently carry out beam bar reinforcement around the beam-column joint. The present invention relates to a precast concrete beam member capable of improving efficiency.

プレキャストコンクリート製梁部材として、従来例えば特許文献１が知られている。特許文献１では、下端主筋と剪断補強筋とが打ち込まれており、柱梁接合部の両側方に直線状に延びて配設されて、コンクリートの充填により柱と一体化されるＵ字型プレキャストコンクリート梁部材であって、該柱梁接合部に位置する中央部分は前記下端主筋だけが連続して横断し、プレキャストコンクリート部分は２分されてその柱側端部は柱端で止まっているように構成されている。   Conventionally, for example, Patent Document 1 is known as a precast concrete beam member. In Patent Document 1, a U-shaped precast in which a bottom main bar and a shear reinforcing bar are driven, linearly extend on both sides of a column beam joint, and are integrated with a column by filling concrete. It is a concrete beam member, and the central part located at the beam-column joint is such that only the bottom main bar is continuously traversed, the precast concrete part is divided in half, and the column side end is stopped at the column end. It is configured.

これにより、その梁長の中央部分に位置する柱梁接合部に相当する部位には、プレキャストコンクリート部分は設けられておらず、当該中央部分には下端主筋のみが露出して柱梁接合部を貫通するようになっており、上記プレキャストコンクリート部分は２分されているものの上記下端主筋により繋がれて単一の部材として形成されているので、施工時に柱梁接合部内で下端主筋同士を接合する必要はなく、もって当該梁部材の製作時において下端主筋の位置精度管理は簡易ですみ、可及的なローコスト化及び省力化が図れる。また、梁部材の応力が最も大きくなって梁主筋量を決定づける要因となる当該梁部材の柱端において、下端主筋は連続して柱梁接合部を貫通するからその位置が上方に上がることがなく、曲げ強度の低下を防止できるようになっている。
特開２００１−２０７５２８号公報 As a result, the precast concrete part is not provided in the part corresponding to the beam-column joint located in the center part of the beam length, and only the bottom main bar is exposed in the center part, and the beam-column joint is Although it is designed to penetrate, the precast concrete part is divided into two parts, but it is connected as a single member by the lower end main reinforcement, so the lower end main reinforcements are joined within the beam-column joint during construction. There is no need, and therefore, the position accuracy control of the bottom main bar is simple when manufacturing the beam member, and the cost and labor savings can be reduced as much as possible. In addition, at the column end of the beam member, the stress of the beam member becomes the largest factor that determines the amount of beam main reinforcement, and the lower end main reinforcement continuously penetrates the column beam joint so that its position does not rise upward. Further, it is possible to prevent a decrease in bending strength.
JP 2001-207528 A

よく知られているように、柱梁接合部における鉄筋の錯綜は、施工作業をきわめて煩雑化している。背景技術のプレキャストコンクリート製梁部材にあっても、正面断面がＵ字型であって底部を有することから、柱梁接合部に設置する際には、柱主筋の配筋と相前後して建て込む必要がある。柱主筋が先に建て込まれているときには、これら柱主筋の間に下端主筋を通しつつ、柱梁接合部に吊り降ろす必要がある。他方、先にプレキャストコンクリート製梁部材を建て込んだ場合には、下端主筋の間に通しながら柱主筋を吊り降ろして建て込む必要がある。また、梁の上端主筋の配筋についても、柱主筋の建て込みと相前後して作業が行われ、柱主筋を先に建て込んだときは、Ｕ字型プレキャストコンクリート梁部材側から柱梁接合部へ向かってスライド移動させて挿入する作業となり、上端主筋を先に建て込んだ場合には、下端主筋に対する場合と同様に、上端主筋の間に通しながら柱主筋を建て込まなければならない。   As is well known, the complexities of reinforcing bars at the beam-column joints make the construction work extremely complicated. Even in the case of precast concrete beam members in the background art, the front cross section is U-shaped and has a bottom. Need to be included. When column main bars are built in first, it is necessary to hang them down from the column main bars while passing the lower main bars between them. On the other hand, when the precast concrete beam member is built first, it is necessary to suspend the column main bar while passing it between the lower main bars. Also, the reinforcement of the upper main bar of the beam is performed in parallel with the column main bar, and when the column main bar is installed first, the beam connection is made from the U-shaped precast concrete beam member side. When the upper main bar is built first, the column main bar must be installed while passing between the upper main bars, as in the case of the lower main bar.

このように、柱梁接合部において配筋作業を実施することを前提としたプレキャストコンクリート製梁部材の構造では、鉄筋を錯綜状態に組み上げていくことから施工効率が良くないという課題があった。   Thus, in the structure of the beam member made from precast concrete which presupposes that a reinforcement work is implemented in a column beam junction part, there existed a subject that construction efficiency was not good because a reinforcing bar was assembled in an intricate state.

本発明は上記従来の課題に鑑みて創案されたものであって、鉄筋が錯綜する柱梁接合部での配筋作業を軽減するのに適した形態を備え、柱梁接合部周りの梁主筋の配筋を効率よく実施することが可能で、施工効率を向上できるプレキャストコンクリート製梁部材を提供することを目的とする。   The present invention has been devised in view of the above-described conventional problems, and has a form suitable for reducing the work of bar arrangement at the beam-column joint where the reinforcing bars are complicated, and has a beam main bar around the beam-column joint. It is an object of the present invention to provide a precast concrete beam member capable of efficiently performing the bar arrangement and improving the construction efficiency.

本発明にかかるプレキャストコンクリート製梁部材は、梁主筋が長さ方向両端から突出されるとともに、スラブ接続筋が側面から突出されたフルプレキャスト梁部と、少なくとも該フルプレキャスト梁部の長さ方向一端に一体的に、当該フルプレキャスト梁部の側面に沿って突出形成され、上記梁主筋を挟む配置で梁主筋接合用空間を形成する左右一対の梁端堰部と、網状可撓性面材からなり、上記梁端堰部上に一体的に連設されて、上記梁主筋接合用空間を外部から仕切る仕切り部材とを備えたことを特徴とする。   A precast concrete beam member according to the present invention includes a full precast beam portion in which a beam main bar protrudes from both ends in the length direction and a slab connecting bar protrudes from a side surface, and at least one end in the length direction of the full precast beam portion. And a pair of left and right beam end weirs which are formed to project along the side surface of the full precast beam part and form a beam main bar joining space with the beam main bar interposed therebetween, and a net-like flexible face material And a partition member which is integrally provided on the beam end weir portion and partitions the beam main bar joining space from the outside.

前記仕切り部材には、スラブ接続筋が配筋されることを特徴とする。   A slab connecting bar is arranged on the partition member.

２つの前記フルプレキャスト梁部が、これらフルプレキャスト梁部間に露出される梁主筋を介して一体的に連結されたことを特徴とする。   The two full precast beam portions are integrally connected via a beam main bar exposed between the full precast beam portions.

前記フルプレキャスト梁部間に露出される梁主筋位置に、当該梁主筋と直交する方向の梁主筋が配筋されることを特徴とする。   A beam main reinforcement in a direction orthogonal to the beam main reinforcement is arranged at the position of the beam main reinforcement exposed between the full precast beam portions.

前記フルプレキャスト梁部間に露出される梁主筋位置に、柱フープ筋が配筋されることを特徴とする。   A column hoop bar is arranged at the beam main bar position exposed between the full precast beam portions.

本発明にかかるプレキャストコンクリート製梁部材にあっては、鉄筋が錯綜する柱梁接合部での配筋作業を軽減するのに適した形態を備えていて、柱梁接合部周りの梁主筋の配筋を効率よく実施することができ、施工効率を向上することができる。   The precast concrete beam member according to the present invention has a form suitable for reducing the bar arrangement work at the beam-column joint where the reinforcing bars are complicated, and the arrangement of the beam main bars around the beam-column joint. The streak can be efficiently carried out, and the construction efficiency can be improved.

以下に、本発明にかかるプレキャストコンクリート製梁部材の好適な実施形態を、添付図面を参照して詳細に説明する。本実施形態にかかるプレキャストコンクリート製梁部材１は基本的には、梁主筋５が長さ方向両端から突出されるとともに、スラブ接続筋６が側面２ａから突出されたフルプレキャスト梁部２と、少なくともフルプレキャスト梁部２の長さ方向一端に一体的に、当該フルプレキャスト梁部２の側面２ａに沿って突出形成され、梁主筋５を挟む配置で梁主筋接合用空間Ｓを形成する左右一対の梁端堰部３と、網状可撓性面材からなり、梁端堰部３上に一体的に連設されて、梁主筋接合用空間Ｓを外部から仕切る仕切り部材４とを備えて構成される。仕切り部材４には、スラブ接続筋６が配筋される。   Hereinafter, preferred embodiments of a precast concrete beam member according to the present invention will be described in detail with reference to the accompanying drawings. The precast concrete beam member 1 according to the present embodiment basically has at least a full precast beam portion 2 in which the beam main reinforcement 5 protrudes from both ends in the length direction and the slab connection reinforcement 6 protrudes from the side surface 2a. A pair of left and right beams integrally formed at one end in the length direction of the full precast beam portion 2 and projecting along the side surface 2a of the full precast beam portion 2 and forming a beam main bar joining space S with the beam main reinforcement 5 interposed therebetween. The beam end weir portion 3 and a partitioning member 4 made of a mesh-like flexible face material, integrally provided on the beam end weir portion 3 and partitioning the beam main bar joining space S from the outside. The Slab connecting bars 6 are arranged on the partition member 4.

プレキャストコンクリート製梁部材１は、柱間スパンに沿う一対の柱７の上端間に掛け渡される長さ寸法で形成される。プレキャストコンクリート製梁部材１全体は、必要な梁強度を確保できるコンクリートで形成され、工場や現場サイトで製作される。プレキャストコンクリート製梁部材１は、梁中央部に位置されるフルプレキャスト梁部２と、プレキャスト梁部２両端の梁端部に位置される梁端堰部３とが一体成形されて形成される。フルプレキャスト梁部２は柱間スパン方向に沿って長い直方体状に形成され、その内部には、上端主筋、下端主筋などの梁主筋５およびせん断補強筋８、その他必要な配筋が埋設される。上端主筋および下端主筋からなる梁主筋５は、フルプレキャスト梁部２の長さ方向両端の端面２ｂから外方へ向かって突出される。フルプレキャスト梁部２の梁せいは、柱７の上端に設置した状態で、スラブ天端Ｔに達する寸法に設定される。   The precast concrete beam member 1 is formed with a length dimension spanned between the upper ends of a pair of columns 7 along the span between columns. The precast concrete beam member 1 as a whole is formed of concrete capable of ensuring the required beam strength, and is manufactured at a factory or site. The precast concrete beam member 1 is formed by integrally molding a full precast beam portion 2 positioned at the center of the beam and beam end weir portions 3 positioned at the beam ends at both ends of the precast beam portion 2. The full precast beam portion 2 is formed in a long rectangular parallelepiped shape along the inter-column span direction, and the beam main reinforcing bar 5 such as the upper main bar and the lower main bar, the shear reinforcing bar 8, and other necessary reinforcing bars are embedded therein. . Beam main bars 5 composed of upper and lower main bars protrude outwardly from end surfaces 2b at both ends in the length direction of the full precast beam portion 2. The beam length of the full precast beam portion 2 is set to a dimension that reaches the top end T of the slab while being installed at the upper end of the column 7.

フルプレキャスト梁部２に一体成形される梁端堰部３は、フルプレキャスト梁部２の下端から、スラブコンクリートがその上に打設される半プレキャスト製などのスラブ部材９の設置高さ位置に達する高さ寸法の板状に形成される。梁端堰部３は、フルプレキャスト梁部２両端それぞれの端面２ｂの左右両端縁から左右一対で、梁主筋５を左右から挟む配置で当該フルプレキャスト梁部２の側面２ａに沿って互いに平行に柱梁接合部１０へ向かって突出される。そしてこれら梁端堰部３は、フルプレキャスト梁部２の端面２ｂとで取り囲んで、梁せい方向に貫通しかつ柱梁接合部１０に向かって開放された梁主筋接合用空間Ｓを形成する。   The beam end dam 3 integrally formed with the full precast beam 2 is located at the installation height position of the slab member 9 made of semi-precast on which slab concrete is placed from the lower end of the full precast beam 2. It is formed in the shape of a plate that reaches the height. The beam end weirs 3 are parallel to each other along the side surface 2a of the full precast beam part 2 in such a manner that the beam main bar 5 is sandwiched between the left and right edges of the end face 2b of each end of the full precast beam part 2 and sandwiched from the left and right. It protrudes toward the beam-column joint 10. These beam end weir portions 3 are surrounded by the end surface 2b of the full precast beam portion 2 to form a beam main bar joining space S that penetrates in the beam direction and is opened toward the column beam joining portion 10.

この梁主筋接合用空間Ｓ内部には、フルプレキャスト梁部２から突出された梁主筋５が位置される。これら梁主筋接合用空間Ｓ内に露出された梁主筋５にはせん断補強筋８が配筋される。また、これら梁主筋５は、柱梁接合部１０に配置される梁用鉄筋に対し、スリーブジョイントやネジ継ぎ手を介して接合される。また梁端堰部３には、コンクリートの打設に際して梁主筋接合用空間Ｓを封鎖するために、下方から補強リブ１１ａ付きの転用可能な底型枠１１が着脱自在に取り付けられる。   In the beam main bar joining space S, a beam main bar 5 protruding from the full precast beam portion 2 is located. Shear reinforcing bars 8 are arranged in the beam main bars 5 exposed in the beam main bar joining space S. Further, these beam main bars 5 are joined to the beam reinforcing bars arranged at the column beam joint 10 via sleeve joints or screw joints. In addition, a divertable bottom mold 11 with reinforcing ribs 11a is detachably attached from below to the beam end weir 3 in order to seal the beam main bar joining space S when placing concrete.

フルプレキャスト梁部２にはその長さ方向に沿う側面２ａに、梁端堰部３の上端３ａと面一で連続する段部２ｃが形成され、これら段部２ｃおよび梁端堰部上端３ａには、スラブ部材９の端縁が一連に係止される。梁端堰部上端３ａには、当該梁端堰部３間の梁主筋接合用空間Ｓを外部から仕切るために、網状可撓性面材からなる仕切り部材４が設けられる。仕切り部材４は、梁端堰部上端３ａから少なくともスラブ天端Ｔに達する高さ寸法で形成される。当該高さ寸法よりも大きくして、スラブ側に折り曲げるようにしても良い。本実施形態にあっては、仕切り部材４として、ラス網が用いられ、このラス網はその上方部分が梁端堰部上端３ａから上方へ突出されるとともに、その下方部分は梁端堰部３内に埋設される。   The full precast beam portion 2 is formed with a step portion 2c continuous with the upper end 3a of the beam end dam portion 3 on the side surface 2a along the length direction thereof. The step portion 2c and the beam end dam portion upper end 3a The end edges of the slab member 9 are locked in series. The beam end dam portion upper end 3a is provided with a partition member 4 made of a net-like flexible face material in order to partition the beam main bar joining space S between the beam end dam portions 3 from the outside. The partition member 4 is formed with a height dimension that reaches at least the slab top end T from the beam end weir portion upper end 3a. You may make it be larger than the said height dimension and bend | fold to the slab side. In the present embodiment, a lath net is used as the partition member 4. The lath net has an upper portion protruding upward from the beam end dam portion upper end 3 a, and a lower portion thereof is the beam end dam portion 3. Buried inside.

さらにフルプレキャスト梁部２の側面２ａには、段部２ｃよりも上方位置からスラブ側へ突出させて、スラブ部材９上に打設されるスラブコンクリートに埋設されることで床とプレキャストコンクリート製梁部材１とを接続するスラブ接続筋６が複数突出される。また、仕切り部材４にも、これに形成した穴を介してスラブ接続筋６が配筋される。これらスラブ接続筋６は図示しない固定金具で仕切り部材４に固定される。   Further, the side surface 2a of the full precast beam portion 2 protrudes from the position above the step portion 2c to the slab side, and is embedded in the slab concrete placed on the slab member 9, so that the floor and the precast concrete beam are provided. A plurality of slab connecting bars 6 connecting the member 1 are projected. Further, the slab connecting bars 6 are also arranged in the partition member 4 through the holes formed therein. These slab connecting bars 6 are fixed to the partition member 4 by a fixing bracket (not shown).

本実施形態にかかるプレキャストコンクリート製梁部材１の作用について説明すると、フルプレキャスト梁部２の両端に、梁主筋接合用空間Ｓを区画する左右一対の梁端堰部３が一体成形され、フルプレキャスト梁部２の端面２ｂからは梁主筋５が梁主筋接合用空間Ｓ内に突出され、フルプレキャスト梁部２の側面２ａからはスラブ接続筋６が突出され、さらに、梁端堰部３の上端３ａに仕切り部材４が設けられたプレキャストコンクリート製梁部材１を工場や現場サイトで製作する。   The operation of the precast concrete beam member 1 according to the present embodiment will be described. A pair of left and right beam end weir portions 3 that define the beam main bar joining space S are integrally formed at both ends of the full precast beam portion 2, and the full precast is performed. The main beam 5 protrudes from the end surface 2 b of the beam portion 2 into the beam main bar joining space S, the slab connection bar 6 protrudes from the side surface 2 a of the full precast beam portion 2, and the upper end of the beam end weir unit 3. A precast concrete beam member 1 having a partition member 4 provided on 3a is manufactured at a factory or a site.

施工に際しては、プレキャストコンクリート製梁部材１を、柱間スパンに沿う一対の柱梁接合部１０間に吊り込んで設置する。この際、梁主筋接合用空間Ｓを備えているので、柱梁接合部１０の配筋は、プレキャストコンクリート製梁部材１の建て込み前に施工しておいても、建て込み後に施工しても良い。次いで、柱梁接合部１０の梁用鉄筋とプレキャストコンクリート製梁部材１の梁主筋５とをスリーブジョイントなどを介して接合する。また、仕切り部材４にスラブ接続筋６を配筋する。その後、梁端堰部３に下方から底型枠１１を取り付けて、梁主筋接合用空間Ｓの下方を封鎖する。次いで、柱梁接合部１０からプレキャストコンクリート製梁部材１の梁主筋接合用空間Ｓにわたってコンクリートを打設する。これにより、梁を構築することができる。   At the time of construction, the precast concrete beam member 1 is suspended and installed between a pair of column beam joints 10 along the column span. At this time, since the beam main bar joining space S is provided, the bar arrangement of the column beam joint 10 may be performed before or after the precast concrete beam member 1 is built. good. Next, the beam reinforcing bar of the column beam connecting portion 10 and the beam main reinforcing bar 5 of the precast concrete beam member 1 are bonded via a sleeve joint or the like. Further, the slab connecting bars 6 are arranged on the partition member 4. Thereafter, the bottom mold 11 is attached to the beam end weir portion 3 from below, and the lower portion of the beam main bar joining space S is sealed. Next, concrete is placed from the beam-column joint 10 to the beam main bar joining space S of the precast concrete beam member 1. Thereby, a beam can be constructed.

他方、プレキャストコンクリート製梁部材１の梁端堰部上端３ａからフルプレキャスト梁部２の段部２ｃに係止してスラブ部材９を設置し、このスラブ部材９上に、フルプレキャスト梁部２および仕切り部材４上端までスラブコンクリートを打設する。これにより、スラブ接続筋６を介して梁と接続しつつ、床を構築することができる。梁と床の構築順序はどちらを先行しても、同時であっても良い。   On the other hand, the slab member 9 is installed from the beam end dam part upper end 3a of the precast concrete beam member 1 to the step 2c of the full precast beam part 2, and on the slab member 9, the full precast beam part 2 and Slab concrete is placed up to the upper end of the partition member 4. Thereby, the floor can be constructed while being connected to the beam via the slab connecting bar 6. The construction order of the beam and the floor may be preceded or simultaneous.

以上説明した本実施形態にかかるプレキャストコンクリート製梁部材１にあっては、梁端部に梁主筋接合用空間Ｓを区画する左右一対の梁端堰部３を設けたので、鉄筋が錯綜する柱梁接合部１０に配筋される梁用鉄筋と、フルプレキャスト梁部２に埋設した梁主筋５との接合作業を、柱梁接合部１０を避けた梁端部で行うことができ、柱梁接合部１０周りの梁主筋５の配筋作業を効率よく実施することができる。また、梁主筋接合用空間Ｓは一対の梁端堰部３で区画されて梁せい方向に貫通しているので、柱梁接合部１０に対する配筋前はもちろんのこと、配筋完了後であってもプレキャストコンクリート製梁部材１を容易に建て込むことができ、言い換えれば、柱梁接合部１０の配筋作業状態に対し、プレキャストコンクリート製梁部材１をいつでも柱７間に建て込むことができ、施工作業自由度を格段に向上することができる。   In the precast concrete beam member 1 according to the present embodiment described above, since the pair of left and right beam end weirs 3 that divide the beam main bar joining space S is provided at the beam end, the columns in which the reinforcing bars are complicated It is possible to perform the joining operation of the beam reinforcing bar arranged in the beam joint 10 and the beam main bar 5 embedded in the full precast beam 2 at the beam end portion avoiding the column beam joint 10. The bar arrangement work of the beam main reinforcement 5 around the joint portion 10 can be performed efficiently. Further, the beam main bar joining space S is partitioned by the pair of beam end weirs 3 and penetrates in the beam direction, so that it is not only before the bar beam joint 10 is arranged but also after the completion of the bar arrangement. However, the precast concrete beam member 1 can be easily built, in other words, the precast concrete beam member 1 can be built between the columns 7 at any time with respect to the bar arrangement work state of the column beam joint 10. The degree of freedom of construction work can be greatly improved.

また、フルプレキャスト梁部２から梁主筋接合用空間Ｓに梁主筋５を突出させたので、柱梁接合部１０の梁用鉄筋との接合を容易に行うことができる。特に、梁主筋５と柱梁接合部１０の梁用鉄筋との接合にスリーブジョイントなどを使用するようにしたので、柱梁接合部１０の梁用鉄筋との位置的干渉を防止することができ、当該構成によっても、柱梁接合部１０の配筋状態にかかわらず、プレキャストコンクリート製梁部材１をいつでも自由に建て込むことができる。   Further, since the beam main bar 5 protrudes from the full precast beam part 2 into the beam main bar connecting space S, it is possible to easily join the beam reinforcing bar of the column beam connecting part 10. In particular, since a sleeve joint or the like is used to join the beam reinforcing bar 5 and the beam reinforcing bar of the column beam joint 10, it is possible to prevent positional interference with the beam reinforcing bar of the column beam joint 10. Even with this configuration, the precast concrete beam member 1 can be freely built at any time regardless of the bar arrangement state of the column beam joint 10.

また、梁端堰部３の上端３ａに、梁主筋接合用空間Ｓを外部から仕切る仕切り部材４を設けたので、スラブと梁とでコンクリートを容易に打ち分けることができる。梁には、それに必要な強度を付与できるコンクリートを打設する必要がある一方で、スラブに対しては梁よりも低強度のコンクリートを打設すればよい。また、スラブコンクリートの打設量は大量である。梁とスラブとで打ち分けができないと、梁用のコンクリートをスラブにも大量に打設することとなり、コストアップとなる。本実施形態にあっては仕切り部材４により打ち分けができるので、スラブに対し梁用のコンクリートを打設する必要がなくて、大幅なコストダウンを達成することができる。フルプレキャスト梁部２の上端をスラブ天端Ｔ位置に設定したので、これによっても適切に梁とスラブの間でのコンクリートの打ち分けを確保することができる。   Further, since the partition member 4 for partitioning the beam main bar joining space S from the outside is provided at the upper end 3a of the beam end weir portion 3, the concrete can be easily separated by the slab and the beam. While it is necessary to cast concrete capable of imparting the necessary strength to the beam, concrete having lower strength than the beam may be cast to the slab. The amount of slab concrete placed is large. If the beam and slab cannot be separated, a large amount of concrete for the beam will be placed on the slab, resulting in an increase in cost. In this embodiment, since it can be divided by the partition member 4, it is not necessary to place concrete for the beam on the slab, and a significant cost reduction can be achieved. Since the upper end of the full precast beam portion 2 is set at the slab top end T position, it is possible to appropriately secure the concrete placement between the beam and the slab.

また、フルプレキャスト梁部２からスラブ接続筋６を突出させたので、床と梁との接合強度を十分に確保することができる。さらに、梁端堰部上端３ａからフルプレキャスト梁部２の段部２ｃにわたってスラブ部材９を係止させることができ、スラブ施工を効率化できる。梁主筋接合用空間Ｓを下方から封鎖する底型枠１１を梁端堰部３に着脱自在としたので、当該底型枠１１を転用でき、省資源化できる。   Moreover, since the slab connecting bar 6 is protruded from the full precast beam portion 2, it is possible to sufficiently ensure the bonding strength between the floor and the beam. Furthermore, the slab member 9 can be locked from the beam end dam part upper end 3a to the step part 2c of the full precast beam part 2, and slab construction can be made efficient. Since the bottom mold 11 that seals the beam main bar joining space S from below is detachable from the beam end weir 3, the bottom mold 11 can be diverted and resources can be saved.

図５には、上記実施形態の第１変形例が示されている。第１変形例では、梁端部となるフルプレキャスト梁部２の他端２ｄから梁主筋５が突出される。すなわち、第１変形例にあっては、フルプレキャスト梁部２の一端に、上記梁端堰部３が一体成形される一方で、他端２ｄは、柱７の上端に設置できるように梁端部まで延長形成される。そしてこの他端２ｄから柱梁接合部１０内に向けて上端主筋および下端主筋からなる梁主筋５が突出される。梁主筋５には、柱梁接合部１０のコンクリートに定着される定着金物１２が設けられる。第１変形例によれば、特に隅柱に適用されるプレキャストコンクリート製梁部材１に関し、当該隅柱での梁主筋５の定着を確保すべき定着部材１２の設置を、フルプレキャスト梁部２から突出させた梁主筋５によって確保することができ、施工性を向上することができる。   FIG. 5 shows a first modification of the above embodiment. In the first modified example, the beam main bar 5 protrudes from the other end 2d of the full precast beam portion 2 serving as the beam end portion. That is, in the first modification, the beam end weir portion 3 is integrally formed at one end of the full precast beam portion 2, while the other end 2 d is installed at the upper end of the column 7. It is extended to the part. And the beam main reinforcement 5 which consists of an upper end main reinforcement and a lower end main reinforcement protrudes toward the inside of the column beam junction part 10 from this other end 2d. The beam main reinforcement 5 is provided with a fixing metal 12 fixed to the concrete of the column beam joint 10. According to the first modified example, particularly with respect to the precast concrete beam member 1 applied to a corner column, the installation of the fixing member 12 that should ensure the fixation of the beam main reinforcement 5 at the corner column is performed from the full precast beam unit 2. It can be secured by the protruding beam main reinforcing bars 5, and the workability can be improved.

図６には、上記実施形態の第２変形例が示されている。第２変形例では、２つのフルプレキャスト梁部２が、これらフルプレキャスト梁部２間に露出される梁主筋５を介して一体的に連結される。これらフルプレキャスト梁部２の互いに連結される一端２ｅ同士は、柱７上端に設置できるように梁端部まで延長形成される一方で、それぞれのフルプレキャスト梁部２の他端には上記梁端堰部３が一体形成される。   FIG. 6 shows a second modification of the above embodiment. In the second modified example, two full precast beam portions 2 are integrally connected via a beam main bar 5 exposed between these full precast beam portions 2. One ends 2e of the full precast beam portions 2 connected to each other are extended to the beam end portions so that they can be installed at the upper ends of the columns 7, while the other end of each full precast beam portion 2 has the beam end. The dam portion 3 is integrally formed.

また、フルプレキャスト梁部２間に露出される梁主筋５位置には、柱梁接合部１０の配筋となる当該梁主筋５と直交する方向の梁主筋１３が先組みして配筋され、当該プレキャストコンクリート製梁部材１を柱７上に吊り降ろすことで、直交方向に配設される他のプレキャストコンクリート製梁部材１の梁端堰部３に突出する梁主筋５に対して、当該梁主筋１３の接合が可能に構成される。また、フルプレキャスト梁部２間に露出される梁主筋５位置には、柱梁接合部１０の配筋となる柱フープ筋１４が先組みして配筋され、当該プレキャストコンクリート製梁部材１を柱７上に吊り降ろすことで、柱７上に突出される柱主筋に対して、柱フープ筋１４の配筋が可能に構成される。   Further, at the beam main bar 5 position exposed between the full precast beam parts 2, a beam main bar 13 in a direction perpendicular to the beam main bar 5 serving as the bar beam connecting part 10 is arranged in advance. By suspending the beam member 1 made of precast concrete on the column 7, the beam is made against the beam reinforcing bar 5 protruding to the beam end weir portion 3 of another beam member 1 made of precast concrete arranged in the orthogonal direction. The main muscle 13 can be joined. In addition, column hoop bars 14 that serve as the reinforcements of the column beam joints 10 are pre-arranged at the beam main reinforcement 5 positions exposed between the full precast beam parts 2, and the precast concrete beam member 1 is arranged. By hanging down on the column 7, the column hoop 14 can be arranged with respect to the column main reinforcement protruding on the column 7.

第２変形例は、２つの梁を一連に形成して３つの柱７間に一挙に架設する形態のプレキャストコンクリート製梁部材１であって、中央に位置する柱梁接合部１０に対しては従来と遜色なく施工できる一方で、左右両側に位置する柱梁接合部１０に対しては、梁主筋接合用空間Ｓにより、柱梁接合部１０周りの梁主筋５の配筋を効率よく施工することができる。また、フルプレキャスト梁部２間に露出される梁主筋５位置に、当該梁主筋５と直交する方向の梁主筋１３や柱フープ筋１４を予め配筋しておくようにしたので、当該プレキャストコンクリート製梁部材１の吊り下ろしにより、柱梁接合部１０における直交する方向の梁の柱主筋や直下の柱７の柱主筋との接合作業を効率よく行うことができる。以上説明したいずれの変形例にあっても、上記実施形態と同様な作用効果を奏することはもちろんである。   The second modified example is a precast concrete beam member 1 in a form in which two beams are formed in series and are erected between three columns 7 at once. While it can be constructed without any difference from the conventional method, for the beam-to-column joints 10 located on the left and right sides, the reinforcement of the beam reinforcement 5 around the beam-to-column joint 10 is efficiently performed by the beam reinforcement connection space S. be able to. Further, since the beam main reinforcement 13 and the column hoop reinforcement 14 in the direction orthogonal to the beam main reinforcement 5 are arranged in advance at the position of the beam main reinforcement 5 exposed between the full precast beam portions 2, the precast concrete By suspending the beam-forming member 1, it is possible to efficiently perform the work of joining the column main reinforcing bars of the beams in the orthogonal direction and the column main reinforcing bars of the columns 7 directly below in the column beam connecting portion 10. Of course, in any of the modifications described above, the same effects as those of the above-described embodiment can be obtained.

本発明にかかるプレキャストコンクリート製梁部材の好適な一実施形態を示す平面図である。It is a top view which shows suitable one Embodiment of the beam member made from precast concrete concerning this invention. 図１に示したプレキャストコンクリート製梁部材の要部拡大斜視図である。It is a principal part expansion perspective view of the beam member made from precast concrete shown in FIG. 図１中、Ａ−Ａ線矢視断面図である。In FIG. 1, it is an AA arrow directional cross-sectional view. 図１中、Ｂ−Ｂ線矢視断面図である。1. It is a BB arrow directional cross-sectional view in FIG. 本発明にかかるプレキャストコンクリート製梁部材の第１変形例を示す平面図である。It is a top view which shows the 1st modification of the beam member made from precast concrete concerning this invention. 本発明にかかるプレキャストコンクリート製梁部材の第２変形例を示す平面図である。It is a top view which shows the 2nd modification of the beam member made from precast concrete concerning this invention.

符号の説明Explanation of symbols

１ プレキャストコンクリート製梁部材
２ フルプレキャスト梁部
２ａ プレキャスト梁部の側面
３ 梁端堰部
３ａ 梁端堰部の上端
４ 仕切り部材
５ 梁主筋
６ スラブ接続筋
１３ 梁主筋
１４ 柱フープ筋
Ｓ 梁主筋接合用空間 DESCRIPTION OF SYMBOLS 1 Precast concrete beam member 2 Full precast beam part 2a Side surface of precast beam part 3 Beam end dam part 3a Upper end of beam end dam part 4 Partition member 5 Beam main bar 6 Slab connecting bar 13 Beam main bar 14 Column hoop bar S Beam main bar joint Space

Claims (5)

梁主筋が長さ方向両端から突出されるとともに、スラブ接続筋が側面から突出されたフルプレキャスト梁部と、
少なくとも該フルプレキャスト梁部の長さ方向一端に一体的に、当該フルプレキャスト梁部の側面に沿って突出形成され、上記梁主筋を挟む配置で梁主筋接合用空間を形成する左右一対の梁端堰部と、
網状可撓性面材からなり、上記梁端堰部上に一体的に連設されて、上記梁主筋接合用空間を外部から仕切る仕切り部材とを備えたことを特徴とするプレキャストコンクリート製梁部材。 A full precast beam part in which the beam main bar protrudes from both ends in the length direction and the slab connecting bar protrudes from the side surface,
A pair of left and right beam ends that are formed integrally with at least one end in the length direction of the full precast beam portion, projecting along the side surface of the full precast beam portion, and forming a beam main bar joint space with the beam main bar interposed therebetween A weir,
A precast concrete beam member comprising a mesh-like flexible face material, and a partition member integrally provided on the beam end weir portion and partitioning the beam main bar joining space from the outside . 前記仕切り部材には、スラブ接続筋が配筋されることを特徴とする請求項１に記載のプレキャストコンクリート製梁部材。   The precast concrete beam member according to claim 1, wherein a slab connecting bar is arranged on the partition member. ２つの前記フルプレキャスト梁部が、これらフルプレキャスト梁部間に露出される梁主筋を介して一体的に連結されたことを特徴とする請求項１または２に記載のプレキャストコンクリート製梁部材。   The precast concrete beam member according to claim 1 or 2, wherein the two full precast beam portions are integrally connected via a beam main bar exposed between the full precast beam portions. 前記フルプレキャスト梁部間に露出される梁主筋位置に、当該梁主筋と直交する方向の梁主筋が配筋されることを特徴とする請求項３に記載のプレキャストコンクリート製梁部材。   4. The precast concrete beam member according to claim 3, wherein a beam main bar in a direction orthogonal to the beam main bar is arranged at a position of the beam main bar exposed between the full precast beam portions. 前記フルプレキャスト梁部間に露出される梁主筋位置に、柱フープ筋が配筋されることを特徴とする請求項３または４に記載のプレキャストコンクリート製梁部材。   5. The precast concrete beam member according to claim 3, wherein a column hoop bar is arranged at a beam main bar position exposed between the full precast beam portions.
JP2006115056A 2006-04-18 2006-04-18 Precast concrete beam members Expired - Fee Related JP4727492B2 (en)

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